import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingDeque;
import java.util.concurrent.BlockingQueue;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * Author: WJW
 * Date: 2024-08-15
 * Time: 22:03
 */

//模拟实现线程池

class MyThreadPoolExecutor{
    private List<Thread> threadList = new ArrayList<>();

    //就是一个用来保存任务的队列
    private BlockingQueue<Runnable> queue = new ArrayBlockingQueue<>(1000);

    //通过n指定创建多少个线程
    public MyThreadPoolExecutor(int n){
        for(int i = 0;i<n;i++){
            Thread t = new Thread(()->{
                //线程要做的事情就是把任务队列中的任务不停的取出来 并执行任务
                while(true){
                    try {
                        //此处的take是带有阻塞功能的
                        //如果队列为空，此处的take就会阻塞
                        Runnable runnable = queue.take();
                        //取出一个任务就执行一个任务即可
                        runnable.run();
                    } catch (InterruptedException e) {
                       e.printStackTrace();
                    }
                }


            });
            t.start();
            threadList.add(t);
        }
    }

    public void submit(Runnable runnable) throws InterruptedException {
        queue.put(runnable);
    }
}
public class ThreadDemo {
    public static void main(String[] args) throws InterruptedException {
        MyThreadPoolExecutor executor = new MyThreadPoolExecutor(4);
        for (int i = 0; i < 1000; i++) {
            int n = i;
            executor.submit(new Runnable() {
                @Override
                public void run() {
                    System.out.println("执行任务" + n + " , 当前线程为：" + Thread.currentThread().getName());
                }
            });
        }
    }
}
